From fab4c085eb9309930e9d46e83136422756cdf6ef Mon Sep 17 00:00:00 2001
From: ache <ache@ache.one>
Date: Mon, 15 Jan 2018 04:25:36 +0100
Subject: Rename DHCP

---
 autoDHCP.sh | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100755 autoDHCP.sh

(limited to 'autoDHCP.sh')

diff --git a/autoDHCP.sh b/autoDHCP.sh
new file mode 100755
index 0000000..f6e144d
--- /dev/null
+++ b/autoDHCP.sh
@@ -0,0 +1,110 @@
+#!/bin/env bash
+
+interface="";
+server="dhcpd"
+ip="10.5.5.11"
+range="/24"
+
+# Todo : List interface ✓ 
+#        Select first ✓
+#        Select dhcpd or dnsmasq ✓
+#        Select ip range ✓
+#        Select ip ✓
+#        Help ✓
+#        Install from Makefile ✓
+
+# Default interface is the first non-wireless interfaces (sorted alpha-num)
+
+if [ "$1" == "dns" ] ; then
+    server="dnsmasq"
+    shift
+fi
+
+if [ "$1" == "help" -o "$1" == "-h" -o "$1" == "--help" ] ; then
+    echo 'Usage : autoDHCP [interface] [ip/range] [dns]'
+    echo ''
+    echo 'You also put the server type at the start of the command'
+    echo 'Ex :'
+    echo '> autoDHCP wlp3s0 10.5.5.11/24'
+    echo '> autoDHCP eth0 192.168.0.1 dns'
+    echo '> autoDHCP dns eth0 192.168.0.1/30'
+fi
+
+
+
+if [ "$1" ] ; then
+    interface="$1"
+    echo "Interface set to ${interface}"
+fi
+
+if [ "$2" ] ; then
+    if [[ "$2" =~ .*/.* ]] ; then
+        ip=$(echo $2 | cut -d'/' -f1)
+        range="`echo $2 | cut -d'/' -f2 `"
+        echo "Range set to ${range}"
+    else
+        ip="$2"
+    fi
+    echo "Ip set to ${ip}"
+fi
+
+if [ "$3" == "dns" ] ; then
+    server="dnsmasq"
+fi
+
+
+
+
+
+
+
+function guess_nowifi {
+    for i in `ls /sys/class/net/`; do
+        if [ ! -d "/sys/class/net/$i/wireless" ] ; then 
+            if [ "$interface" ] ; then 
+                if [[ "$i" < "$înterface" ]] ; then
+                    interface="$i"
+                fi
+            else
+                interface="$i"
+            fi
+        fi
+    done
+}
+
+
+
+if [ -z "$interface" ] ; then
+    guess_nowifi
+fi
+
+sudo ip l set "$interface" up
+sudo ip a r "${ip}/${range}" dev "$interface"
+
+if [ "$server" == "dhcpd" ] ; then 
+    sudo /usr/bin/dhcpd -4 -q -pf /run/dhcpd4.pid "$interface"
+elif [ "$server" == "dnsmasq" ] ; then
+
+    echo 'Configure dnsmasq'
+
+    ip_start=$(echo "${ip}" | sed 's/\(\([0-9]\{1,3\}\.\)\{3\}\)[0-9]\{1,3\}/\1/')
+    ip_start_tmp=$(echo "${ip}" | sed 's/\(\([0-9]\{1,3\}\.\)\{3\}\)//')
+    ip_start_tmp=$((ip_start_tmp+1))
+
+    dhcp_range=$(echo ${ip_start}{$ip_start_tmp\,,254}),12h
+    echo "$dhcp_range"
+
+    cat <<< $(
+    echo "
+        interface=${interface}
+        listen-address=${ip}
+        bind-interfaces
+        dhcp-range=${dhcp_range}"
+    ) > /tmp/dnsmasq.conf
+    sudo dnsmasq --conf-file=/tmp/dnsmasq.conf
+
+else
+    echo "Server name ${server} unknow"
+fi
+
+echo 'Should be ready ;)'
-- 
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